Not able to suspend or hibernate

Posted by Tim on Ask Ubuntu See other posts from Ask Ubuntu or by Tim
Published on 2011-02-11T03:43:21Z Indexed on 2011/02/11 7:33 UTC
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My Ubuntu 10.10 on my laptop Lenovo T400 is not able to suspend or hibernate.

Whenever I click Suspend or Hibernate,

  • the moon LED on the bottom of the lid flashes a few seconds, the screen quickly shows something like "some devices fail to suspend, error 5",
  • and then the moon LED goes off and the display still has ambient light illumination. I suppose in suspend or hibernation state, the display should have no illumination, just like when the laptop is turned off, right?
  • If I press any key, the unlock screen dialogue will pop out.

I searched a little on the internet, and installed 'acpi-support' according to some advice but it does not help. Any suggestions to solve this problem? Thanks and regards!


ADDED:

Laptop specifications:

CPU
    Intel Mobile Core 2 Duo P8800  @ 2.66GHz
    Penryn 45nm Technology
RAM
    1.9GB Single-Channel DDR3 @ 532MHz (7-7-7-20)
Motherboard
    LENOVO 2764CTO (None)
Graphics
    ThinkPad Display 1440x900 @ 1440x900
    ATI Mobility Radeon HD 3400 Series (Lenovo)
Hard Drives
    244GB Western Digital WDC WD2500BEVS-08VAT2 (SATA)
Optical Drives
    HL-DT-ST DVDRAM GSA-U20N
    AZCDW EFCPUZ452 SCSI CdRom Device
    AZCDW EFCPUZ452 SCSI CdRom Device
Audio
    Conexant 20561 SmartAudio HD

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